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Question 3#

Regarding the diagnosis of asymptomatic bacteriuria all the following are true, EXCEPT:

A. For women, a count of ≥10⁵ cfu/mL in voided volume in two consecutive samples is diagnostic
B. For men, a count of ≥10⁵ cfu/mL in voided volume in two consecutive samples is diagnostic
C. For patients with indwelling catheter, a count of ≥10² cfu/mL in a single collected urine sample is diagnostic
D. For specimens collected with in and out catheter, a count of ≥10³ cfu/mL in collected urine is appropriate quantitative diagnostic criterion
E. For men with specimen collected using external condom catheter, ≥10³ cfu/mL is an appropriate quantitative diagnostic criterion

Correct Answer is B

Comment:

Answer B

For asymptomatic bacteriuria in women a count of ≥10⁵ cfu/mL in voided volume in two consecutive samples is diagnostic, whereas only one sample is needed to be diagnostic for a man with no urinary symptoms In a single catheterised sample, a count may be as low as 10² cfu/mL to be diagnostic. The count can be slightly higher at 10³ cfu/mL for an ‘in and out’ catheter or convene/condom catheter sample to be diagnostic.

Asymptomatic bacteriuria should only be treated in pregnant women or prior to transurethral surgery with a risk of mucosal bleeding. Essential read: EAU guidelines on Urological Infections and NICE Quality Standards (QS90), List of Quality Statements (Urinary tract infections in adults).